body {
  background: #999;
  color: #444;
}


#wrapper {
  background: #fff;
  border: 1px solid gray;
  margin: 0 auto;
  width: 540px;
  text-align: center;
}


table{
  margin: 1em 0;
  width: 100%;
}

thead {
  background: #8fbc8f;
}
tbody tr:nth-child(2n){
  background:#e0ffff;
}
tbody td {
}
